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Fiddler

Topic: Software

 From HandWiki - Reading time: 3 min
Short description: HTTP debugging proxy server
Fiddler
Progress-Telerik-Fiddler-Logo.png
Fiddler Everywhere.png
Screenshot of Fiddler Everywhere logging HTTP/S network calls
Original author(s)Eric Lawrence[1]
Developer(s)Telerik
Initial release6 October 2003; 20 years ago (2003-10-06)[2]
Operating systemWindows and later, macOS, and Linux[3]
TypePacket analyzer
Website{{{1}}}

Fiddler is a debugging proxy server tool used to log, inspect, and alter HTTP and HTTPS traffic between a computer and a web server or servers. Fiddler was originally written by Eric Lawrence while a Program Manager on the Internet Explorer development team at Microsoft.[1]

The usage of the name “Fiddler” has broadened to encompass additional products and tools provided by Progress Telerik including Fiddler Classic, Fiddler Everywhere, Fiddler Core, Fiddler Cap, and Fiddler Jam.

Features

Fiddler captures HTTP and HTTPS traffic and logs it for the user to review. The logging is performed by implementing man-in-the-middle interception using self-signed certificates.[4] Fiddler can be used to edit network sessions by setting breakpoints to pause the processing of requests and permitting the alteration of the request and/or response.

The Fiddler Ecosystem offers different products and tools to address specific use cases:

  • Fiddler Classic is the original (and free) debugging proxy tool for Windows only.
  • Fiddler Everywhere is the next generation of Fiddler. Fiddler Everywhere runs on macOS, Windows, and Linux, and has built-in team collaboration and an enhanced UI.
  • Fiddler Core is a .NET library allowing you to capture and modify HTTP and HTTPS traffic.
  • Fiddler Cap is a lightweight Windows-only tool designed for non-technical users to capture web traffic and then share the data within the team for debugging.
  • Fiddler Jam is a web-based troubleshooting solution for support teams looking to capture web traffic, web logs and web app screenshots without requiring any programming.

History

On 6 October 2003, Eric Lawrence released the first official version of Fiddler.[2]

On 12 September 2012, Fiddler was acquired by Telerik and the original author joined the company to work on Fiddler on a full-time basis.[5]

On 22 December 2015, Eric Lawrence announced[6] he was leaving Telerik and the Fiddler project.

On 3 October 2019, Progress Telerik released version 5 of Fiddler.[7]

On 1 June 2020, Progress Telerik released a beta version of Fiddler Everywhere.[8]

On 18 September 2020, Progress Telerik announced the RTW version of Fiddler Everywhere 1.0.[9]

On 29 June 2021, Progress Telerik announced the release of Fiddler Everywhere 2.0.[10]

On 28 September 2021, Progress Telerik announced the RTW version of Fiddler Jam.[11]

See also

  • Packet analyzer – a computer program or piece of computer hardware that can intercept and log traffic that passes over a digital network
  • Comparison of packet analyzers
  • Charles Proxy – proxy server for debugging web traffic, similar to Fiddler

References

  1. ↑ 1.0 1.1 Lawrence, Eric (2005-06-06). "HTTP Performance". IEBlog. MSDN (Microsoft). https://docs.microsoft.com/en-us/archive/blogs/ie/http-performance. 
  2. ↑ 2.0 2.1 "Fiddler v1.x Release History". Telerik. https://www.telerik.com/support/whats-new/fiddler/release-history/fiddler-v1.x. 
  3. ↑ "Fiddler Web Debugger - Get Fiddler". https://www.telerik.com/download/fiddler. 
  4. ↑ Lawrence, Eric (January 2005). "Fiddler PowerToy - Part 1: HTTP Debugging". MSDN (Microsoft corporation). https://docs.microsoft.com/en-us/previous-versions/ms976395(v%3dmsdn.10). 
  5. ↑ Lawrence, Eric (September 2012). "Fiddler Telerik". Fiddler. http://www.fiddler2.com/fiddler/LetterFromEric.asp. 
  6. ↑ Lawrence, Eric (December 2015). "Fiddler - A Segue". Telerik. https://www.telerik.com/blogs/fiddler-a-segue. 
  7. ↑ Velikov, Kamen (October 2019). "What's New in Fiddler for Windows v5.0.20194". Telerik. https://www.telerik.com/blogs/what's-new-in-fiddler-for-windows-v5.0.20194. 
  8. ↑ Velikov, Kamen (June 2020). "Fiddler Everywhere v0.10 is Here!". Telerik. https://www.telerik.com/blogs/fiddler-everywhere-v0-10. 
  9. ↑ Pereira, Jonathan (September 2020). "Fiddler Everywhere 1.0 is Here!". Telerik. https://www.telerik.com/blogs/fiddler-everywhere-web-debugging-official-release. 
  10. ↑ Yaneva, Simona (June 2021). "New Release: Fiddler Everywhere 2.0 Is Here!". Telerik. https://www.telerik.com/blogs/new-release-fiddler-everywhere-2.0. 
  11. ↑ Yaneva, Simona (September 2021). "What's New in Fiddler Jam". Telerik. https://www.telerik.com/blogs/whats-new-telerik-fiddler-jam. 

Further reading

  • Lawrence, Eric (16 February 2016). Debugging with Fiddler: The complete reference from the creator of the Fiddler Web Debugger 2nd Edition. ISBN 978-1511572903. 

External links





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